Just wanted to update. I used a shampoo bar again today, and it's going really well! There's far less of that icky feeling, and its starting to get replaced by a really soft feeling. The curl enhancement and volume is really fantastic too, so far this experiment is going great! I did use a different conditioner, but no ACV.
high porosity (from coloring)

Shampoo: Mop Top Gentle Shampoo
Co-wash: Chistophe Robin Lemon Cleansing Cream
RO: CJ strengthening, Kenra moisturizing
LI: Jessicurl Aloeba
DT: CJ rehab, Christophe Robin Prickly Pear Mask
PT: SS protein treatment, Ouidad 12 minute
Stylers: Jessicurl RR, SS Firm Hold Gel
Oils: caudalie, sweet almond